LED with current confinement structure and surface roughening

    公开(公告)号:US08410490B2

    公开(公告)日:2013-04-02

    申请号:US11983515

    申请日:2007-11-09

    IPC分类号: H01L27/15

    摘要: An LED having a p-type layer of material with an associated p-contact, an n-type layer of material with an associated n-contact and an active region between the p-type layer and the n-type layer, includes a confinement structure that is formed within one of the p-type layer of material and the n-type layer of material. The confinement structure is generally aligned with the contact on the top and primary emission surface of the LED and substantially prevents the emission of light from the area of the active region that is coincident with the area of the confinement structure and the top-surface contact. The LED may include a roughened emitting-side surface to further enhance light extraction.

    III-NITRIDE FLIP-CHIP SOLAR CELLS
    64.
    发明申请
    III-NITRIDE FLIP-CHIP SOLAR CELLS 审中-公开
    III-NITRIDE FLIP-CHIP太阳能电池

    公开(公告)号:US20120180868A1

    公开(公告)日:2012-07-19

    申请号:US13279131

    申请日:2011-10-21

    IPC分类号: H01L31/0264 H01L31/18

    摘要: A III-nitride photovoltaic device structure and method for fabricating the III-nitride photovoltaic device that increases the light collection efficiency of the III-nitride photovoltaic device. The III-nitride photovoltaic device includes one or more III-nitride device layers, and the III-nitride photovoltaic device functions by collecting light that is incident on the back-side of the III-nitride device layers. The III-nitride device layers are grown on a substrate, wherein the III-nitride device layers are exposed when the substrate is removed and the exposed III-nitride device layers are then intentionally roughened to enhance their light collection efficiency. The collection of the incident light via the back-side of the device simplifies the fabrication of the multiple junctions in the device. The III-nitride photovoltaic device may include grid-like contacts, transparent or semi-transparent contacts, or reflective contacts.

    摘要翻译: 用于制造III族氮化物光伏器件的III族氮化物光伏器件结构和方法,其增加了III族氮化物光伏器件的光收集效率。 III族氮化物光伏器件包括一个或多个III族氮化物器件层,并且III族氮化物光伏器件通过收集入射在III族氮化物器件层的背面上的光而起作用。 III族氮化物器件层在衬底上生长,其中当除去衬底时,III族氮化物器件层被暴露,然后有意地暴露暴露的III族氮化物器件层以增强它们的光收集效率。 通过设备背面的入射光的收集简化了器件中多个结的制造。 III族氮化物光伏器件可以包括格栅状触点,透明或半透明触点或反射触点。